Dyfyniad APA

Diagram Group. (1962). <The complete book of exercises>. Arrow Books.

Dyfyniad Arddull Chicago

Diagram Group. <The Complete Book of Exercises>. London: Arrow Books, 1962.

Dyfyniad MLA

Diagram Group. <The Complete Book of Exercises>. Arrow Books, 1962.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.